Add websocket entrypoint for app

.env.example

@@ -0,0 +1,9 @@
+VERSE_MASTER_NODE_URL=
+VERSE_URL=
+VERSE_READ_NODE_URL=http://localhost:8545
+BLOCK_NUMBER_CACHE_EXPIRE_SEC=
+DATASTORE=redis
+NODE_SOCKET=ws://[::]:8546
+PORT=3000
+REDIS_URI=redis://localhost:6373
+MAXRECONNECTATTEMPTS=10

README.md

@@ -21,13 +21,33 @@ Details are described later.
 - `src/config/configuration.ts`
 - `src/config/transactionAllowList.ts`
 
-### 3. Set up npm
+### 3. Set configuration variables
+- Create file `.env` refer to `.env.example`
+- Update those variables with corrected values from your side
+
+### 4. Set up redis server
+- Verse-Proxy use redis as a database to read and write data, so in order to run this proxy you will need start a redis server and pass url to `REDIS_URI`
+- also Verse-Proxy need to know which database you would use which can be config using `DATASTORE`
+For example: 
+```
+DATASTORE=redis
+REDIS_URI=redis://localhost:6373
+```
+
+### 5. Handle disconnect from node's websocket
+- `MAXRECONNECTATTEMPTS` specifies the maximum number of attempts the Verse-proxy will make to reconnect to a node's websocket.
+**example**: 
+```
+MAXRECONNECTATTEMPTS: 10
+```
+
+### 5. Set up npm
 ```bash
 $ npm install
 $ npm build
 ```
 
-### 4. Run app
+### 6. Run app
 
 ```bash
 # development